grid主窗口与子窗口信息交互

前天写了双击GRID然后弹出子窗口，可交互信息的内容

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"  xmlns:title="*"    layout="absolute" creationComplete="init()">
		<mx:Script>
			<![CDATA[
				import mx.core.UIComponent;
				import mx.controls.Alert;
				import flash.events.MouseEvent;
				import mx.events.CloseEvent;
				import mx.events.ListEvent;
				import mx.collections.ArrayCollection;
				import mx.managers.PopUpManager;
				
				private var menuData:ArrayCollection= new ArrayCollection();
				private var canvas:Sprite = new Sprite();
				private var uiComponent:UIComponent;
				
				
				/**
				 * 初始化蒙板等。 
				 **/
				
				private function init():void{
					menuData=new ArrayCollection([
						{no:"101",name:"菜单管理",address:"21",type:"branch"},
						{no:"102",name:"查询测试",address:"22",type:"leaf"},
						{no:"103",name:"更改",address:"23",type:"branch"}
					]);	
					
					//初始化蒙板的颜色以及透明度
					var g:Graphics = canvas.graphics;
					g.beginFill(0x000000,0.3);
					g.drawRect(0,0,this.width,this.height);
					g.endFill();
					menuDataGrid.addEventListener(ListEvent.ITEM_DOUBLE_CLICK, doubleClick);  
					this.menuDataGrid.dataProvider=menuData;
				}
				
				
				/**
				 * 删除操作, 通过提示是否删除，通过事件来捕捉用户的操作.
				 **/
				private function doDel():void{		
					if(menuDataGrid.selectedItem == null){
						Alert.show("请选择需要删除的菜单");	
					}else{
						Alert.show("确定删除?", "删除", 3, this, delClickHandler);
					}
					
				}
				
				/**
				 *如果确认了删除，则将menuData中的记录删除 
				 **/
			   private function delClickHandler(event:CloseEvent):void {
             	   if (event.detail==Alert.YES){
             	     	menuData.removeItemAt(menuDataGrid.selectedIndex);	
             	    }	
            	}
				
				/**
				 * 双击操作,双击目前为编辑数据 
				 **/
				private function doubleClick(event:ListEvent):void{	
					doEdit();					
				}
				
				/**
				 * 编辑操作 
				 **/
				private function doEdit():void{
					if(menuDataGrid.selectedItem == null){
						Alert.show("请选择需要编辑的菜单");	
					}else{
						uiComponent= new UIComponent();
						uiComponent.addChild(canvas);
						this.addChild(uiComponent);	
						var menuWindow:MenuTitleWindow = new MenuTitleWindow();
						var obj:Object= {selectIndex:menuDataGrid.selectedIndex,no:menuDataGrid.selectedItem.no,name:menuDataGrid.selectedItem.name,address:menuDataGrid.selectedItem.address
									,type:menuDataGrid.selectedItem.type};							
						if(menuDataGrid.selectedItem.type == "branch"){
							obj.typeSelIndex=0;
						}else{
							obj.typeSelIndex=1;
						}						
						obj.editDo= editMenuData;
						obj.cancleDo=cancleEdit;
						menuWindow.object = obj;
						PopUpManager.addPopUp(menuWindow,this);
						PopUpManager.centerPopUp(menuWindow);
					}
				}
				/**
				 *增加操作 
				 **/
				private function doAdd():void{
					if(uiComponent == null){
						uiComponent = new UIComponent();
						uiComponent.addChild(canvas)
					}
					this.addChild(uiComponent);
					var menuWindow:MenuTitleWindow = new MenuTitleWindow();
					var object:Object = {editDo:editMenuData,cancleDo:cancleEdit};
					menuWindow.object= object;
					PopUpManager.addPopUp(menuWindow,this);
					PopUpManager.centerPopUp(menuWindow);
				}	
				
				
				/**
				 * 此将函数作为一个变量传递给子窗口，并且在子窗口中调用 
				 * 目前如果是编辑，则能够得到grid的selectIndex，且已经够selectIndex传入子窗口中.
				 * 可以将selectIndex是否存在作为判断是更改菜单还是增加菜单.
				 **/
				private function  editMenuData(menuTitle:MenuTitleWindow):void{
					var object:Object = menuTitle.resultObject;
					if(object.hasOwnProperty("selectIndex")){
						menuData.removeItemAt(object.selectIndex);
						menuData.addItemAt(object,object.selectIndex);
					}else{
						menuData.addItem(object);
					}			
					this.menuDataGrid.dataProvider=menuData;
					this.cancleEdit();
				}
				
				/**
				 *移去蒙板
				 **/
				private function cancleEdit():void{
					this.removeChild(uiComponent);
				}
				
				
			]]>
		</mx:Script>		
		
		<mx:DataGrid id="menuDataGrid" includeInLayout="true" visible="true"  width="100%"  height="90%" 
			editable="false"  y="34" doubleClickEnabled="true" >
   	 		 <mx:columns>
                <mx:DataGridColumn dataField="no"  headerText="编号" />
                <mx:DataGridColumn dataField="name" headerText="名称"/>
                <mx:DataGridColumn dataField="address"	 headerText="地址"/>
               	<mx:DataGridColumn dataField="type"  headerText="类型" />
        	</mx:columns>	
   		 </mx:DataGrid>	
   	 <mx:Button id= "delButton"  label="删除菜单"  click="doDel()"  x="10" y="10"/>
   	 <mx:Button id= "editButton"  label="编辑菜单"  click="doEdit()"  x="126" y="10"/>
   	 <mx:Button id= "addButton"  label="增加菜单"  click="doAdd()"  x="230" y="10"/>
   	
</mx:Application>

<?xml version="1.0" encoding="utf-8"?>
<mx:TitleWindow xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" width="400" height="300" title="菜单" showCloseButton="false" alpha="1.0" fontFamily="Times New Roman" fontSize="12">

	<mx:Script>
		<![CDATA[
			import mx.managers.FocusManager;
            import mx.managers.PopUpManager;
			import mx.collections.ArrayCollection;
			
			[Bindable]
			public var object:Object;
			
			public var resultObject:Object;
			
			private var saveData:Function;	
			private var cancleEdit:Function;
			
			[Bindable]
			public var types:ArrayCollection = new ArrayCollection(
                [ {label:"branch", data:1}, 
                  {label:"leaf", data:2}]);
			
			
			
			/**
			 * 弹出菜单保存以后，保存数据，主菜单中的保存方法是变量形式传递进来
			 * saveData对应的是 menu.mxml中的editMenuData(menuTitle:MenuTitleWindow).
			 * 将MenuTitleWindow.mxml作为参数传递回去，操作菜单中的结果集. 
			 **/
			private function doSave():void{
				saveData = object.editDo;
				
				if(object.hasOwnProperty("selectIndex")){
					resultObject={no:this.no.text,name:this.menuName.text,
									address:this.address.text,type: this.typeCombo.selectedItem.label,
									selectIndex:object.selectIndex} ;
				}else{
					resultObject={no:this.no.text,name:this.menuName.text,
									address:this.address.text,type: this.typeCombo.selectedItem.label};
				}
				this.saveData(this);
				PopUpManager.removePopUp(this);
			}
			private function doCancle():void{
				cancleEdit = object.cancleDo;
				PopUpManager.removePopUp(this);
				this.cancleEdit();
			}
		]]>
	</mx:Script>
        <mx:HBox width="100%" y="40">
                <mx:Label text="No:" width="65" textAlign="left"/>
                <mx:TextInput id="no"  text="{object.no}" width="100%" textAlign="left"/>
        </mx:HBox>
         <mx:HBox width="100%" y="161">
                  <mx:Label text="菜单名称：" width="65"/>
                <mx:TextInput id="menuName"  text="{object.name}" width="100%" textAlign="left" />
        </mx:HBox>
         <mx:HBox width="100%" y="68">
                  <mx:Label text="地址：" width="65"/>
                  <mx:TextInput id="address"  text="{object.address}" width="100%" textAlign="left"/>
        </mx:HBox>
        <mx:HBox width="100%" y="112">
                <mx:Label text="类型:" width="65"/>
                <mx:ComboBox id = "typeCombo" dataProvider="{types}"  selectedIndex="{object.typeSelIndex}">
                </mx:ComboBox>
        </mx:HBox>
        <mx:Button label="保存" click="doSave()"  x="118" y="228"/>
        <mx:Button label="关闭" click="doCancle()"  x="201" y="228"/>
</mx:TitleWindow >